How much RAM does the Apple iMac 21.5-inch 3.06GHz support?

The iMac 21.5-inch 3.06GHz supports up to 16GB of memory across 4 slot(s), up to 4GB per slot.

What type of memory does the iMac 21.5-inch 3.06GHz use?

It uses DDR3 SODIMM memory modules.

Guaranteed-compatible DDR3 SODIMM upgrades for the Apple iMac 21.5-inch 3.06GHz, in matched-kit options that fill your slots.

This option is out of stock.

Specifications reported for this system.

Good to know

Faster modules automatically run at your system's maximum supported speed.
Maximum capacity per slot is inferred from total capacity ÷ number of slots.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

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Guaranteed-compatible DDR3 SODIMM upgrades for the Apple iMac 21.5-inch 3.06GHz, in matched-kit options that fill your slots.

This option is out of stock.

Specifications reported for this system.

Good to know

Faster modules automatically run at your system's maximum supported speed.
Maximum capacity per slot is inferred from total capacity ÷ number of slots.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.